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Subject to technical amendments without prior notice | 83055400iUK – 2.1 | ait-deutschland GmbH
IMPORTANT
The unit can be damaged if the display is confirmed with
, although the system is not properly filled.
For brine/water heat pumps it is necessary to select which heat
source fluid is to be used.
Brine
Must be selected if the heat pump is operated with a
brine-water mixture (= standard). Whether probes or
surface collectors are used is irrelevant.
If there is an
intermediate heat exchanger
on the heat source
side:
Water Brine
Must be selected if water is used as the heat source me-
dium on the primary side of the intermediate heat ex-
changer and a brine-water mixture is used on its second-
ary side.
Water Water
Must be selected if water is used as the heat source me-
dium on both the primary and secondary sides of the in-
termediate heat exchanger. For the water/water setting
the heat source inlet temperature must be at least 7°C or
higher.
IMPORTANT
Performance-controlled brine/water heat pumps with re-
frigerant R407C shall only be operated on the secondary
side of the intermediate heat exchanger and not with wa-
ter as the heat source medium. Therefore, the menu en-
try “Water Water” is not visible in the display with per-
formance-controlled brine/water heat pumps with refrig-
erant R407C.
The minimum temperature of the heat source (T-HS min) will be
set automatically depending on the selected medium.
page 46, “System setting during commissioning“, “T-HS
min”
NOTE
If no heat source is selected and the enquiry is only an-
swered by navigating to and selecting , “Brine” is auto-
matically set as the heat source.
A subsequent change of the heat source medium as well
as “T-HS min” is only possible with customer service access.
If this screen
is then displayed, disconnect the heating and heat pump con-
troller from the power supply, check the 3-pole cable for the BUS
connection and rectify any faults found.
After that, the navigation screen appears.
NOTE
With some devices, the compressor is now heated initially.
The heating phase until the compressor starts can take
several hours when starting up for the first time.
With dual air/water heat pumps the flow is monitored
while the pump is running. If the flow is not ok, the heat
pump does not start up and no error is displayed. To this
end, check the ASD input, if it is not set to ON the flow is
too low.
page 17, “Query inputs“
So long as the heat pumps have not yet been configured, the
“GO” symbol flashes at the top right of the navigation screen.
Navigating to and clicking on “GO” calls up the startup guide. This
assistant will guide you through the most important settings of
the regulator during initial commissioning.
After the initial commissioning has been completed, the “GO”
symbol will no longer be displayed.
page 11, “Startup guide“ and page 12, “Reset startup
parameters“
If you do not wish to use the startup guide, first make the settings
required for your system in the “System settings” menu (
page
24, “Determining system setting“).
Then set the desired temperatures (
page 22, “Determining
temperatures“).
Then make all other settings that are necessary for the conditions
of your installation.
